Pin fastener



Feb. 25, 1941. n E, BAZNER 2,233,043

PIN FASTENER Filed June 28. 1939 *5'7 mM @.VOQM

Patented Feb. 25, 1941 3U1FI`TED srArEs PINFASTENER.

Eug'cnel'Bazner, Providence, R. I.

l-:Applicaticn June`28, 1939;-Se`rial rl\To."t?.81',567

191 Claims.

is apparentthatmy invention'is adapted forluse for any typefrofwa\pin"fastener, suchA as a safety pin, etc.

-An y'object E'f-my invention :is` to-provide a pin fastener of-"this descriptionfwhich may secure the desired-articleto a clothing orfother fabric without thenecessity of employing a separate' catch.

@A -furtherobject ffmy invention relates to the A type 'offpin#tongue I preferablyl employ which preferably .functions in conlbination'"with` a pair of gripping teeth'wadjacentthe opposite endrof thebaseplate when saidpiri-tongue is pivoted to closed vposition to*'successfullysecure theiarticle `to the `=fabric-again`st -therea'cly removal thereof and-to. provide a` Ystructure permitting 'itsrready removal when `'thebase fplate fand member to `which fit is attachedare pivoted at an oblique angle to` thefabricfso vthatdue to the preferably arcuate fshape of the pin tongue, the pin tongue may be` readily lifted `outV ffthe' fabric"for` the V'complete removal vv/f Tthe pin i4fastener and attachedarticlefrom-the fabric.

A further'feature of my''linvention resides" in the fact thatV I- secure myf pin" fastener ito the fabric through the mdiumof-fa spring action v alone. The improved spring I preferably 'employ functions -not only to retain the'pin tongue in closedA attached position,` -but also) to retainit in open position.

A further feature of my `invention lrelatesA to the provision `of undulationsr in the spring member providing at least one trough betweensaid undula'tions to abut saidbasevplate togive a greater strength to' the spring, which contacting the base plate forms `a shorter armedv spring member of greater strengthbetween saidcontacting pointes a spring pivot and the area of contact of saidspring with `afcam surfaceon the pin tongue, said cam surface Jpreferablyrising to a' raised dead -center edge whereby-both the front and rear portions of the rearmost undulation in -said springmay cooperate with* the yrespective lrearlland front-surfaces'of`v saidl camportion in rear'and frontrespectively.. of the raised `cam portion dead centercedge' toias'sist` in retaining the pin' ytongue fin openforf` closedf'ripositions.

Further features i' of myiinvention';:relatento,the ,:speciflc construction-of `jpinifas'tener Ipreferably fw employ ,comprising aafminimumlznumber: of 'f parts which may bereadily.stampedifromisheet ma- --teria1:.and readily"assembled,` comprising in Im'y preferred embodiment a two pieceY member only, comprisingaa base having pivotv ears, gripping l teeth andthe spring member projecting integral- "ly downwardly therefrom,` andifdesired, in `adl 1dition1 solder s dam forming side Walls projecting integrally .downwardly therefrom r to 'form dams itoxpreventthe solderemployed to attachthe 'pin fastener to'theornament from cloggingand interferingfwithrtheaction of the` spring mem-'1W ber; and a'tpin tongue' pivotally `mounted on said pivot ears.

Thesefand su'chother objects of my L invention xasxmayhereinafter lfappear may be best under- :stood froma description `ofan embodiment fthereof; such asiszshownf in' the accompanying drawfingfillustrating myrinvention applied as a finding adapted to be permanently secured to the lower rsurface of aflbutton, .-bar` pin, brooch or other fjewelry ornament for d'etachably securing rit' to 20 f affabric: andl to'be' completely concealed thereby.

"In'zthe drawing, A Fig;` 1l is asidef'elevation of an embodiment of nay-.invention adapted forI use as a jewelry finding.

^Fgl12 isaplan view thereof. YF-igx is a vertical sectional View through rthe "pinfastenerfshown infFig. 1 having a'suitable jewelry ornament secured thereto suitably amounted on arpiece f' fabric, portions ofthe pin 3 .'l fastener'nding .being shown inf elevation.

"liignf` isfavvertical sectional View similar to -Fig. 3 afterthe rornament and pinfastenerbase I plate' haves been raised `to permit the. pin tongue "to'be readily withdrawn from the fabric by mere- "lysliding it out 4of arcuate engagement there# with "'Fig. 5 is al longitudinal sectional View V:taken `throughthe pin fastener/shownv in Fig. 1 illustrating the pintongue` in'elevation and with the portionof' the cam surface thereof in front ofr4 -the'fraisd dead center cam edge abutting the `Idownwardly `undulating surface of the rearmost v undulation'in rearvfof the'crest thereof to yield- A"ably A'urgeithe fpin `tongue in a closed position be- "tween' the 'gripping teeth thereof.

V'Fig'. '6 is a longitudinal-` sectional View .similar "ltoFigq with'the pin tongue raised so' that the wcamfdeadcenter edge thereof sis substantially :rabatt-ing: the crest 4ofi the rearmost undulation in 50 the spring.

Fig 7 -:is,a11ongitudinal1 sectional view 4similar tof Figs. i5, :and-i6. withthe` cam portion thereof in rear fofrtherraised rdead a center edge abutting the downwardlyrundulatngrsurface of: :the rearmost -undulationvof-rthe spring in frontfofthe crest thereof to cause said spring to yieldably retain the spring tongue in an open position.

Fig. 8 is a plan View of the blank from which the improved base plate of my pin fastener is preferably constructed showing the respective pivot ears and gripping teeth projecting laterally from each side thereof in rear and front respectively of upstanding solder dam forming side walls formed therein during the initial stamping process and with the spring strip projecting integrally forwardly from the front end thereof.

Fig. 9 is a perspective view of the improved type of base plate and integral parts I preferably employ after they have been bent to finished shape and the desired undulations whereernployed formed in the spring strip.

In the drawing, wherein like characters of reference indicate like parts throughout, I0 generally indicates a pin fastener constructed in accordance with my invention, as stated, in the form of a jewelry finding adapted to be permanently secured to the lower surface of a button, bar pin, brooch or other jewelry ornament to be completely concealed thereby for detachably securing it to a fabric 48, such as an article of apparel. Said pin fastener comprises a base plate I2 having pivot means I4 mounted thereon adjacent the rear end thereof, a spring strip 22 mounted on the front end of said base plate as at I8 extending rearwardly to underlie said plate to a point beyond said pivot means I4. Said base plate I2 is also preferably provided with the spaced gripping teeth 20 projecting downwardly adjacent the front end thereof. I also provide a spring strip 22 mounted on the front of said plate extendingrearwardly to underlie said'plate to a lpoint beyond said pivot means I4. While said spring means may extend downwardly from the front end of said base plate, it is preferably provided with an upwardly bent portion 24a to provide a fulcrum 26a substantially abutting said base plate and a rear portion extending downwardly from said pivot. If desired, said spring strip 22 is preferably provided with la plurality of undulations 30a and 3l!b therein` being upwardly bent in the troughs 24L and 24D between said undulations -to provide a plurality of fulcrums 26a and 2Gb substantially abutting said base plate I2 and a rear undulation 3E]b extending rearwardly and downwardly from said rearmost fulcrum 26h. It is obvious, however, that as the spring projects downwardly and rearwardly from its point of attachment to the base plate that it may pivot at the said point I8 to provide a relatively long lever arm between said point of attachment I8 and the area 32 at which the cam surface of the pin tongue, to be described, abuts it to provide a relatively weak spring. If, however, the spring strip 22 has a portion thereof upwardly bent to provide the fulcrum 2lia substantially abutting the base plate, it is obvious that the effective leverage length of the spring will be shortened from the distance I8 to 32 to the distance 26ab to 32, thereby giving the effect oi a stronger spring. If, however, a plurality of undulations 3I|SL and 30b are provided, it is obvious that the fulcrum 26b in front of the rearmost undulation will abut the base plate to function as a fulcrum 2Gb, the effective length of the Ispring then becoming the relatively short distance 2Gb to 32 to provide in effect a still stronger spring. It is obvious, however, that even with this construction the spring will yield at three points, namely, the point I8 where it is attached to the base plate, the front fulcrum 2lii and the rear fulcrum 2Gb, the resulting bendings of the spring somewhat counteracting each other to provide a still stronger spring action to urge the pin tongue 36 to open or closed position. If desired, the base plate I2 may be provided with the downstanding side walls 38 between the pivot means I4 and the teeth 20 which may be readily formed during the initial stamping of the blank, shown in Fig. 8, to function as dam means to prevent the solder employed in attaching the base plate I2 to the lower surface of the jewelry ornament 42 from, seeping around the edges thereof and interfering with the action -with said bent teeth 20 to secure said pin fastener and attached ornament 42 to the clothing fabric 48 in the manner shown in Figs. 3 and 4. As shown therein, the pin blade is so arcuately bent as to extend downwardly within said fabric land have the end thereof extend upwardly through the fabric to substantially abut the lower surface of said base plate when in closed position. It is obvious that if the ornament and base plate l2 are in a closed position at against the fabric 48, that any lateral pull will merely tend to sink the gripping teeth 20 more tightly within the fabric, said teeth functioning in the nature of a continuous arc with said pin blade 46 to retain the ornament and pin fastener to the fabric so long as the base plate and ornament are retained in closed position. It is also obvious that, as illustrated in Fig. 4, if the base plate I2 and attached ornament 42 be pivoted to an open position, the attached ornament and pin fastener may be readily removed from the fabric 48, by gently lifting them upwardly and outwardly, the particular arcuate shape vof the pin tongue permitting its ready removal from the fabric.

The solid arcuate rear portion 44 of said pin tongue has a cam surface comprising a rear preferably substantially flat surface 5D on the rear edge thereof when in closed position to abut the rear end of said spring strip 22 to retain said spring tongue in open position, as shown in Fig. 7, when pivoted thereto and terminating in the raised dead center forming cam edge 34 of greater radius at the lower edge thereof when in said closed position for a purpose to be described, said cam portion also having a front substantially flat surface 52 in front of said cam edge 34 when in closed position adapted to abut said spring portion 22 to urge said cam edge 34 downwardly to continuously tend to pivot and retain said pin tongue blade in closed position. Fig. 5 illustrates my improved pin fastener in closed position, with the front cam surface 52 substantially abutting the spring to retain the pin tongue 36 in closed position. Fig. 6 illustrates the pin tongue 36 in partially open position with the dead center edge 34 substantially abutting the spring strip 22, it being obvious that the spring strip is depressed as the dead center edge 34 passes the spring 22, as shown in Fig. 6, in

moving from closed to open position, andvice;

versa. As Vstated previously, the spring strip 22: flexes at its point of attachment I8 and the pivot pointszaand 26h. between the respective undulations`3lla and 381 where employed. Said' undulations 36a and 30h, if one or more of them is employed, or even if a single' depression 24" only. be employed, shorten the `effective bending lengthor leverage of the springinthe manner hitherto' described, as will be vapparent from these figures. It ris also obvious `from anfinspection of Fig. .6 that if the crest 32'of` the rear Yundulation 39b be substantially opposite the dead center edge 34 of the pin tongue as it passes said spring, the rear downwardly undulating surface, 54 of said rearrnost undulation 30b'will1abut the front substantially flat cam surface 521I to retain said pin blade 46 in closed position between saidteeth 20, as shown in Fig. 5', and that'` the `front downwardlyundulating portion 5B of the rearmost undulation 3l)b of said spring will abut the rear substantially fiat cam portion 5U to also retain the pin tongue in open position, as .shown in Fig.l 7. While the respective front f and rear surfaces 52 and 50 are preferably of substantially flat shape, as shown, they may be constructed of any suitable cooperating shape.

While the spring strip 22 may comprise a separate spring apart from the base plate`I2, in the embodiment shown, the pivot means I4, the gripping teeth 28 and spring strip 22 are preferably constructed integral with the base plate I2, the pivot ears I4 and teeth 2U projecting laterally from each side thereof in rear and front `respectively of the downstanding solder dam` side walls 38, where employed, and the spring strip 22 projecting integrally forwardly therefrom as shown in Fig. 8. It is obvious that the blank may be suitably stamped out of flat stock `and the various portions thereof suitably bent to the position shown in Fig. 9 for mounting of the pin tongue 36 thereon. It is thus obvious that the base plate shown in Fig. 9 has the downstanding solder dam forming side walls 38 pror jecting downwardly from each side thereof, the

aligned pivot ears I4 each provided with a suitable pivot pin receivinghole I3 above the rearmost undulation 3l'b of said spring strip projecting integrally downwardly from the side edges thereof adjacent the rear end thereof, the aligned preferably rearwardly arcuately `bent spaced gripping teeth 20 projecting integrally downwardly from the side edges thereof adjacent the front end thereof and the spring strip 22 pro-l jecting integrally downwardly from the front edge thereof, as at I8, arcuately rearwardly and downwardly between said teeth 20 and then rearwardly to overlie said plate to a point beyond said pivot ears I4, in the embodiment 'shown having at least a single depression 2ta and preferably a plurality of depressions 24a and 24b between the plurality of undulatio-ns 30a-and 30h' therein being downwardly bent in the troughs 24a and 24b between said undulations to provide a plurality of fulcrums substantially abutting said base plate and a rearmost undulation` 38b extending downwardly from said rearmost pivot 26h. The solid arcuate portion 44 of said pin tongue is preferably provided with a suitable hole 43 therein so that the pivot pin 45 may extend through the respective holes I3 in saidpivot ears I4 and said hole 43 in said` enlarged Arear end 44 to pivotably mount said enlarged rear end 44 on said, pivot ears, preferably so, that` the raised cam edge 34 thereof ,may abut` the.

crest of the rearmost undulation 30b of `said spring to pass a doubly :formedjdead center.`

, Itis thusobvious that bythe action of the spring alone, which may be increased by the troughs214a and 24.1J between the respective undulations 30a and 30h, my device functions `to permanently retain the pin blade 35 in open or closed positions suitably yielding to permit pivoting of said pin blade from open to closed position, andvice versa, and functioning to detach-,- ably secure said ornament to said fabricfwithout` a pin catch and to permit the ready removal of said pin` fastener from the fabric in the manner heretofore described.

While I have shown my improved spring fastener and attached ornament in attached position on a vertically extending fabric in Figs. 3 and 4,* inasmuch as the base plate I2 is usually attached to the lower unornamented surface of the button, bar pin, brooch or other ornament, I have described the various parts of my improved fastener `in the specification and claims inthe position they assume when so attached, andI have employed the words front and rear relative to the front unpivoted end of the pin tongue when in closed position.

Itis apparent, therefore, that `I have provided a novel type of pin fastener with the advantages explained above.

It is understood that my invention is not, limited to the specific embodiment shown and that variousdeviations may be made therefrom without departing from the spirit and scope of the appended claims.

What I claim is:

1. A pin fastener for buttons, bar pins, brooches and like ornaments comprising a base plate adapted to be soldered to the lower surface of saidornament to be completely concealed thereby having downstanding solder dam formingside walls, aligned pivot ears projecting integrally downwardly from the side edges of the, lower ysurface thereof adjacent the rear end thereof, aligned rearwardly arcuately bent gripping teeth projectingintegrally downwardly from the side edges thereof adjacent the front end thereof, 4and a springstrip portion projecting integrally downwardlyl from the front edge thereof extending arcuately rearwardly and downwardly between said teeth and then rearwardly to underlie said plate to a point beyond said pivot ears having a plurality of undulations therein, being upwardly bent in the troughs of said undulations to pro-1 vide a plurality of fulcrums substantially abutting said base plate and a rearmost undulation extending downwardly from said rearmost ,fulcrum, ,and a pin tongue having a solid arcuate rear portion pivotally mounted on saidpivot ears having ,la pin blade extendingarcuately forwardly andulOWa-rdly from said pivoted rear portion, said solid arcuate rear portion having a cam surface comprising alrear substantially flat surface 'on i the rear edge thereof when in closed position to abut the front downwardly undulating surface of the rearmost undulation of said spring to retain said pin tonguein open position when pivoted thereto terminating in a raised cam edge of greater radius'at the upper edge thereof when in closed position and a front substantially fiat surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed'said raised edge dead center and crest of the rearmostV undulati'on of said spring portion, the reardownwardly undulating surface of the rearmost: un-` dulation of saidv spring portion may abut the then upper front substantially flat surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain saidV pin tongue blade in closed position between said teeth,

2. A pin fastener for buttons, bar pins, brooches and like ornaments comprising a base plate adapted to kbe secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip mounted on the front end of said plate extending rearwardly to overlie said plate to a point beyond said pivot means, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said pivoted rear portion, said solid arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of greater radius at the upper edge thereof when in closedposition and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin tongue blade in closed position.

3. A pin fastener for buttons, bar pins, brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, and a spring strip portion projecting integrally downwardly from the front edge thereof and then rearwardly to underlie said plate to a point beyond said pivot means', and a pin tongue having a solid arcuate yrear portion pivotally mounted on said pivot means having a pin bla-de extending forwardly from said pivoted rear portion, said solid arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of greater radius at the upper edge thereof when in closed position and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin tongue blade in closed position.

4. Apin fastener, for buttons,bar pins,brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip mounted on the front end of said plate extending rearwardly to Aunderlie said plate to a point beyond said pivot means having a portion thereof upwardly bent to provide a fulcrum substantially abutting said base plate and a rear portion extending downwardly from said fulcrum, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said rear portion, said solid arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pintongue in open position when pivoted thereto terminating in a raised cam edge of greater radius at the upper edge thereof when in closed position and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said. pin tongue blade in closed position.

5. A pin fastener for buttons, bar pins, brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip mounted on the front end of said plate extending rearwardly to underlie said plate to a point beyond said pivot means having a central portion having a plurality of undulations therein, being upwardly bent in the troughs of said undulations to provide a plurality of fulcrums substantially abutting said base plate and a rear undulation extending rearwardly and downwardly from said rearmost fulcrum, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said pivoted rear portion, said solid arcuate rear portion having a cam surface comprising a rea-r surface on the rear edge thereof when in closed position to abut the front downwardly undulating surface of the rearmost un dulation of said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of a greater radius at the upper edge thereof when in closed position and a front surface in front of said cam edge in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center and crest of the rearmost undulation of said spring portion, the rear downwardly undulating surface of the rearmost undulation of said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin tongue blade in closed position.

6. A pin fastener for buttons, bar pins, brooches and like ornaments, comprising a base plate adapted to be soldered to the lower surface of said ornament to be completely concealed thereby having downstanding solder dam forming side walls, pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip mounted on the front end of said plate eX- tending rearwardly to underlie said plate to a point beyond said pivot means, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said pivoted rear portion, said solid arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of greater radius at the upperedge thereof when in closed position and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised ledgedead center, vsaid-,spring portion may. ab'ut `.the then upper 'front surface of .said cax'n portion to urge said raised :camedge downwardly to :continuously tend to. pivot `and `retain lsaid pin tongue blade in closed position.

7. A` pin fastener for buttons, bar pins, brooches and like ornaments comprising a base plate adapted to be securednto'the lower surface of said ornament to be completelyconcealed thereby having pivot means .on the lower` Vsurface thereof Vadjacent the rear end thereof, spaced gripping teeth lprojecting downwardly from each side thereof adjacent the frontend thereof, a spring strip mounted on the front end of said plate eXtendingrearWardly-to underlie said plate to a point beyond said pivot.means, and a pin tongue having asol-id arcuategrear `portion `pivotally mounted on said pivot-means having a pin blade extendingforwardly from .said rearv portion-said solid arcuate rear portion having a cam surface comprising a `rear surface on `the rear edgethereof when in closed position to abut said spring to retain-said pin tongue in open position when pivoted thereto terminating in a raised cam edge` of greater radius at the upper edge thereof when vin. closed position and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring portion may abut Ythe then upper Vfront surface of said cam portion to` urge said raised cam edge downwardly to continuously" tend to pivot and retain said pin tongue blade inclosed position between said teeth. k

8. A pin fastener for buttons, bar pins, brooches and like ornaments comprising a base plate adapted to be secured to the lower surface of said ornament to be `completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, aligned rearwardly arcuately bent gripping teeth projecting integrally downwardly from *theV side edges thereof adjacent the front end thereof, a spring strip mounted on the front end of'said plate extending rearwardly to underlie? said plate to a point 'beyond said pivot means, anda pin tongue having a solid arcuate rear portion'pivotally mounted on said pivot means having a pin blade extending arcuately upwardly and forwardly from said pivoted rear portion, said arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pin tongue in open position when. pivoted thereto terminating in a raised cam edge Vof greater radius at the upper edge thereof when `in closed position and a front surface infront of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin tongue blade in closed position between said teeth.

9. A pin fastener for buttons, bar pins, brooches and like ornaments comprising a base plate adapted to be soldered to the lower surface of said ornament to becompletely concealed thereby having pivot means on the lower surface thereof adjacent the rear endthereof,

aligned `rearwardly arcuately bent: gripping teeth projecting .downwardly `from each sideit'hereof adjacent .the frontend thereona 'spring-strip `mounted on the front end `of said plate extendiing'rearwardly to underlie said .plate to a point beyondsaid pivot means, anda pin tongue havning a solid arcuate rear `portion 'pivotally .mounted on said pivot'meansfhaving apiny blade extending arcuately 'forwardly and `upwardly from said rear portion, said solid arcuate rear iportion having a cam surface `comprising a rear surface :on the rear edge :thereof when in closed position `to `abut saidspring to retain said pin tongue open position when pivoted `thereto terminating. in a raised @cam edge ofgreater radi-us at .the-upper Iedge -thereof when in closed position and a front surface in front of saidicam edge whenin closed position, whereby when-said `pinftongue is pivoted from open-to closed position passed said .raised edge dead centerysaid spring portion may abut the thenupper front vof 'said ornament to be completely concealed thereby, aligned pivot ears lprojectingintegrally downwardly from the side edges of 'thellower surface adjacent the rear end thereof, aligned rearwardly Aarcuately bent gripping teeth projecting 'integrally downwardly from the side edges thereof adjacent the front end thereof, and a spring strip `portion projecting integrally downwardly from fthe'front edge'there'of extending arcuately "rearwardly 'and downwardly between said teeth l`and thenrearwardly to underlie said plate to a point beyond said pivot earshaving a plurality of undulations therein,being upwardly bent in the 'troughs'of said undulations 'to provide a; plurality of `fulcrums substantially `abutting said base plate and a rearmo'st un- `dulation extending downwardly from said rearmost-ffulcrum, and a pin tongue `having a solid arcuate rear `portion pivotally` mounted on said pivote ears having a pin blade' extending arcuately forwardly and upwardly fromsaid vpivoted rear portion, said solid arcuate rear portion havving a earny surface comprising a rear substantially 'flatlsurface y'on the rear edge thereof whenin closed positionv tov abut the front downwardly undulatingsurface of the rearmost undulation `of said spring to 'retain said' pintongue in open :position when pivote'dthereto terminating in a raised. cam ledge of greater radius at the upper edge thereof when in closed position and a front `substantially yflat surface `in front of saidcam edgewhenin closed position, whereby when ysaid pin tongue ispivoted froml open `to closed position lpassed .said raised` edgeV dead centerand crest ofthe rearmostlundulation of said spring 1 portion, the rear `downwardly undulating surface of the rearmost undulation ofsaidlspringV portion may abut. the .then` upper v.front `substantially iiat surface of said cam portion to urge :said raised cam edge downwardlyito continously tendV to pivot and retainl said pin tongueblade ini closed Aposition between said teeth.

11.\A pin Afastener for buttons, bar pins,

brooches and like ornaments,` comprising abase vplate adapted to be vsecured to the lower-'surface of said-*ornamentl to-be completely concealed thereby having `pivot means on `the lower surface thereof adiacenti .the -rear endthereof;` aspiring strip portion lprojecting integrally downwardly from thefront edge thereof and then extending ilO rearwardly to underlie said plate to a point beyond said pivot means having a portion thereof upwardly bent to provide a fulcrum substantially abutting said base plate and a rear portion extending downwardly from said fulcrum, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said rear portion, said solid arcuaterear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of greater radius at the upper edge thereof when in closed position and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin ltongue blade in closed position.

12. A pin fastener for buttons, bar pins,

`brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip portion projecting integrally downwardly fromthe front edge thereof and then extending rearwardly to underlie said plate to a point beyond said pivot means having a central portion having a plurality of undulations therein, being upwardly bent in the troughs of said undulations to provide a plurality of fulcrums substantially abutting said base plate and a rear undulation extending rearwardly and downwardly from said rearmost fulcrum, anda pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said pivoted rear portion, said solid arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut the front downwardly undulating surface of the rearmost undulation of said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of a greater radius at the upper edge thereof when in closed position and a front surface in front of said cam edge in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center and crest of the rearmost undulation of said spring portion, the rear downwardly undulating surface of the rearmost undulation of said spring portion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin tongue .blade in closed position.

13. A pin fastener for buttons, bar pins, brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip mounted on the front end of said plate extending rearwardly to underlie said plate to a point beyond said pivot means havinga portion thereof upwardly bent to provide a fulcrum substantially abutting said base plate and a rear portion extending downwardly from said fulcrum, and a pin tongue having a rear portion pivotally mounted on said pivot means having a pin blade extending forwardly from said rear portion, said rear portion having a projection projecting therefrom adapted to abut said spring on opposite sides thereof to retain said pin tongue in open or closed position, said spring yielding to permit passage of said projection when said pin tongue is pivoted to open or closed position.

14. A pin fastener for buttons, bar pins, brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, a spring strip mounted on the front end of said plate extending rearwardly to underlie said plate to a point beyond said pivot means having a central portion having a plurality of undulations therein, being upwardly bent in the troughs of said undulations to provide a plurality of fulcrums substantially abutting said base plate and a rear undulation extending rearwardly and downwardly from said rearmost fulcrum, and a pin tongue having a rear portion pivotally mounted on said pivot means having a pin blade extending forwardlyffrom said pivoted rear portion, said rear portion having a projection projecting therefrom adapted to abut the downwardly undulating surfaces of the rearmost undulation of said spring on opposite sides thereof to retain said pin tongue in open or closed position, the crest of the rearmost undulation of said spring yielding to permit passage of said projection thereover when said pin tongue is pivoted to open or closed p0- sition.

15. A pin fastener f-or buttons, bar pins,

brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, spaced gripping teeth projecting downwardly from each side thereof adjacent the front end thereof, a spring strip mounted on the front end of said 'plate extending rearwardly to underlie said plate to a point beyond said pvot means, and a pin tongue having a rear portion pivotally mounted on said pivot means having a pin blade extending vof said torna-ment to be completely concealed Vthereby having pivot means on the lower surface thereof adjacent the rear end thereof, aligned rearwardly arcuately bent gripping teeth projecting downwardly from each side thereof adjacent the front end thereof, a spring strip mounted on the front end of said plate extending rearwardly to underlie said plate to a point beyond said pivot means, and a pin tongue having a rear portion pivotally mounted on said pivot means having a pin blade extending arcuately forwardly and upwardly from said rear portion, said rear portion having a projection projecting therefrom adapted to abut said spring on opposite sides thereof to retain said pin tongue in open or closed position, said spring yielding to permit passage of said projection when said pin tongue is pivoted to open -or closed position.

17. A pin fastener for buttons, bar pins, bronches and like ornaments, comprising, a base plate adapted to` be soldered to the lower surface of said ornament to be completely concealed thereby having pivot means on the l-ower surface thereof adjacent the rear end thereof, aligned rearwardly arcuately bent gripping teeth projecting downwardly from each side thereof adjacent the front end thereof, a spring strip mounted on the front end of said plate extending rearwardly to underlie said plate to a point beyond said pivot means, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot means having a pin blade extending arcuately forwardly and upwardly from said rear portion of substantially the same degree of curvature as said teeth, said solid arcuate rear portion having a cam surface comprising a rear surface on the rear edge thereof when in closed position to abut said spring to retain said pin tongue in Iopen position when pivoted thereto terminating in a raised cam edge of greater radius at the upper edge thereof when in closed position and a front surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center, said spring por-tion may abut the then upper front surface of said cam portion to urge said raised cam edge downwardly to continuously tend to pivot and retain said pin tongue blade in closed position between said teeth.

18. A pin fastener for buttons, bar pins, bronches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby, aligned pivot ears projecting integrally downwardly from the side edges of the lower surface adjacent the rear end thereof, aligned rearwardly arcuately bent gripping teeth projecting integrally downwardly from the side edges thereof ,adjacent the front end thereof, and a spring strip portion projecting integrally downwardly from the front edge thereof extending arcuately rearwardly and downwardly between said teeth and then rearwardly to underlie said plate to a point beyond said pivot ears having a plurality of undulations therein, being upwardly bent in the troughs of said undulations to provide a plurality of fulcrums substantially abutting said base plate and a rearmost undulation extending downwardly from said rearmost fulcrum, and a pin tongue having a solid arcuate rear portion pivotally mounted on said pivot ears having a pin blade extending arcuately forwardly and upwardly from said pivoted rear portion of substantially the same degree of curvature as said teeth, said solid arcuate rear portion having a cam surface comprising a rear substantially flat surface on the rear edge thereof when in closed position to abut the front downwardly undulating surface of the rearrnost undulation of said spring to retain said pin tongue in open position when pivoted thereto terminating in a raised cam edge of greater radius at the upper edge thereof when in closed position and a front substantially nat surface in front of said cam edge when in closed position, whereby when said pin tongue is pivoted from open to closed position passed said raised edge dead center and crest of the rearmost undulation of said spring portion, the rear downwardly undulating surface of the rearmost undulation of said spring portion may abut the then upper front substantially at surface of said cam portion to urge said raised cam edge downwardly to continuousy tend to pivot and retain said pin tongue blade in closed position between said teeth.

19. A pin fastener for buttons, bar pins, brooches and like ornaments, comprising a base plate adapted to be secured to the lower surface of said ornament to be completely concealed thereby having pivot means on the lower surface thereof adjacent the rear end thereof, aligned rearwardly arcuately bent gripping teeth projecting downwardly from each' side thereof adjacent the front end thereof, a spring strip mounted on the front end of said plate extending rearwardly to underlie said plate to a point beyond said pivot means, and a pin tongue having a rear portion pivotally mounted on said pivot means having a pin blade extending arcuately forwardly and upwardly from said rear portion of substantially the same degree of curvature as said teeth, said rear portion` having a projection projecting therefrom adapted to abut said spring on opposite sides thereof to retain said pin tongue in open or closed position, said spring yielding to permit passage of said projection when said pin tongue is pivoted to open or closed position.

EUGENE BAZNER. 

